Fifa's congress has opened. The vote for president will go ahead on Friday.

Michel Platini, the head of Uefa, the European football governing body, had asked Mr Blatter to resign after the crisis talks in Zurich, which involved heads of the six international confederations. The president refused.

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Media captionUefa head Michel Platini: "Blatter will convince the majority to vote for him... but he has already lost, Fifa has already lost"

Mr Platini later said that if Mr Blatter were re-elected, Uefa might have to discuss its relations with Fifa.

Key sponsors have expressed concern over twin corruption investigations by both the US and Swiss authorities.

Uefa threat

The emergency meeting was Mr Blatter's first appearance since the crisis began on Wednesday.

He was not among the 14 people who were charged by the US authorities on Wednesday with racketeering, fraud and money laundering.

At a Uefa news conference later, Mr Platini said he had asked Mr Blatter "as a friend" to resign, saying: "I have had enough - enough is enough, too much is too much.

One of those indicted, Chuck Blazer, the former top American official at Fifa, has already pleaded guilty to four charges and has been a co-operating witness for the FBI since he quit football in 2013.